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7-4. User Mode
7-4-1. User Mode Operation
▪
To enter User mode, press the maintenance button while
the unit is on. After one beep,
“1” and its abbreviated
mode name
“MT” will be alternately displayed.
▪
To select the mode options, use the
▲
and
▼
buttons.
▪
To confirm your selection, press the maintenance button. To return to the previous step, press
the RESET button.
▪
To execute the selected mode, press and hold the maintenance button for three seconds.
▪
To return to normal operation mode, press and hold the RESET button for five seconds.
Mode
Mode name
Abbreviated mode name
1
Switching Maintenance mode on/off
MT
2
Zero adjustment
0 ppm
3
Air adjustment
400 ppm
(target concentration level)
4
Alarm test
AL T
5
Alarm event history
AL H
6
Clock setting
DATE
< 1
st
stage alarm >
▪
AL1 alarm light (amber) flashes and the status indicator sequentially-flashes amber.
▪
Audio alarm beep: Fast, high and low beep tones.
▪
COM-ZA1 alarm relay contact closes. / COM-ZB1 alarm relay contact opens.
< 2
nd
stage alarm >
▪
AL2 and A1 alarm lights (red and amber) flash and the status indicator sequentially-flashes
red.
▪
Audio alarm beep pattern: Very fast high and low beep tones.
▪
COM-ZA2 alarm relay contact closes and COM-ZA1 alarm relay contact remains closed. /
COM-ZB2 alarm relay contact opens and COM-ZB1 alarm relay contact remains open.
▪
During User mode, gas detection, alarm operation, analog output, and contact
output activation are active as during normal operation mode. However, audio
alarm mute and alarm clearance are not active and cannot be used.
▪
Return to normal operation mode after using User mode.
NOTE
Use a rounded pin (e.g. precision screwdriver) for pressing the Maintenance
button.
NOTE
